Builder Security were Forerunner Builders who were responsible for the security of other Builders and they can be called to serve alongside of the official military of the Warrior-Servants during times of war. During peace time, however, they are officially just a paramilitary organization.[1] It is possible that they are similar to the Myrmidons. Some, if not all of Builder Security were former Warrior-Servants who changed their rate to become Builders.



  1. Halo Waypoint: Halo: Cryptum Glossary